Restricting Cubase to use only Single Monitor when Multiple Display Monitors are Used


I am using Cubase and requires me to open many windows of within Cubase in iMac with Mojave. I am using dual monitors, say A and B.

Say, I open Cubase in Monitor A ( all menu’s of the app will appear in Monitor A). How can I force Cubase to open its windows within monitor A and not in B. I have other apps running in monitor B and it makes it difficult for me to work like this.

Any help would be greatly appreciated.